
BugHerd
Usersnap
Userback
Bird Eats Bug
Pastel
Markup.io
Bugasura
Visual feedback and bug reporting tool for websites

Material UI
The ultimate directory for top UI component libraries in React, Vue, Angular, Nuxt, Svelte, Rails, Weblow, and more.
Which is more popular?
Based on our record, Marker.io seems to be more popular. It has been mentioned 8 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | marker.io | componentlibraries.com |
| Pricing | ||
| Platforms | — | |
| Company | 2017 | Startup from the United States · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


Collect website feedback from your team, clients, and users. Get feedback with screenshots & technical metadata directly into your favorite project management tool. Say goodbye to messy emails, spreadsheets and powerpoint. There is a better way!
We want builders to avoid searching for the perfect UI component library for their project and scrolling through GitHub repos, outdated blog lists, or product pages that barely show what’s inside... We built ComponentLibraries.com to make finding the right component library effortless. Browse a...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Marker.io yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Product tour
No ComponentLibraries videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Marker.io and ComponentLibraries.
ComponentLibraries's answer:
There wasn't a single platform showcasing ALL the component libraries for any framework, let alone promoting bootstrapped independent ones, so we built one!
ComponentLibraries's answer:
Next.js, Typescript, Sanity CMS
ComponentLibraries's answer:
Component Libraries is literally the only platform showcasing all the best component libraries, besides GitHub repos, outdated blog lists, or product pages.
Share your experience with using Marker.io and ComponentLibraries. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


With this tool, users can convert screenshots from any website into a powerful bug report directly into your existing tools. Key features of Marker include screenshot annotation tools, shareable links and workflow...
Marker is a bug tracker tool built with a wide variety of options to collaborate different tools and get every attention of web developer totally. It can capture information pertaining to the environment from which...
We have no reviews of ComponentLibraries yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Marker.io is a feedback tool that allows users to attach product comments to a given UI component in an app. It’s overlaid on the UAT environment, and allows users to export screenshots and logs alongside their review comments. User... - Source: dev.to / over 1 year ago
This is a really nice note and solution of the problem. What is the difference from your competitor https://marker.io/? - Source: Hacker News / over 3 years ago
I'm looking for a free and/or open source self-hosted alternative to marker.io for visual bug tracking/reporting. Source: over 3 years ago
Tracking ComponentLibraries since Feb 2025.
When comparing Marker.io and ComponentLibraries, you can also consider the following products.

BugHerd: The Website Feedback Tool for Agencies
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A CSS Framework and a Set of React Components that Implement Google's Material Design
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Usersnap is a customer feedback software for SaaS companies that need to constantly improve and grow their products.
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Userback empowers product teams to collect, understand, and act on user feedback with unprecedented speed and clarity.
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Saw a bug? Send an instant replay to engineers. It will come with console logs and everything. Developers will ❤️ you.
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Sticky note-based feedback collection tool for live websites
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